I have all three of those...

I am experiencing 2 quite annoying problems with this scenery: -As I have said before, even after uninstalling all older scnenery, there is still a 2 ft drop-off at the end of runway 10 (the turnaround) Although it is not visible, the aircraft still falls and crashes. -Sometimes, near the island of ...

Here is a screenshot.

EDIT: Nevermind, I found the old Afcad.

I just removed all the old scenery and afcads, and it still happens at the turnaround at the end of runway 10.

I think I have deleted all the files related to the previous scenery, I'll check.

In the manual it was stated that you may sink to the ground at Saba and St. Barts. Guess what happened to me at TFFJ. Is there any way to fix this problem?